QUESTIONS WITH CORRECT ANSWERS
GRADED A+
• Allosteric inhibition.
Answer: Modification of enzyme structure by adding/removing chemical
groups
• peroxisomes.
Answer: membrane bound organelle formed by proteins and lipids in the
cytosol
• Enzyme-substrate complex.
Answer: Temporary complex formed when substrate binds enzyme
• Gibbs free energy (G).
Answer: Amount of energy available to do work
• lysosomal enzymes and membrane.
Answer: synthesized in the rough ER, processed and activated in Golgi
• Temperature effect (too cold).
Answer: Less movement; slower reaction
• functions of rough ER.
Answer: secreted proteins membrane proteins (inserted in membrane)
• extracellular matrix.
Answer: complex of molecules generated by cells
• Open system.
Answer: A system that exchanges energy and matter with surroundings;
cells are open systems
• pentose sugar, nitrogen base, and phosphate group.
Answer: what make up a nucleotide monomer?
,• integrins.
Answer: link ECM proteins such as fibronectin with the cellular
cytoskeleton (helps bind signals to cytoplasm)
• ATP/ADP cycle.
Answer: Continuous regeneration of ATP from ADP and phosphate
• Positive ΔG.
Answer: Reaction is energetically unfavorable (endergonic)
• they release a water molecule.
Answer: what happens when 2 monosaccharides join to make a
disaccharide?
• golgi apparatus.
Answer: finishes, sorta and ships polarized flattened membraneous sacs cis
face and trans face proteins mature here
• cilia.
Answer: back and forth motion (sea anemone)
• disaccharide.
Answer: 2 monosaccharides joined by glycosidic linkage (covalent bond)
• plasmodesmata.
Answer: intercellular signals in plant cells
• ATP hydrolysis.
Answer: ATP + H2O → ADP + Pi; removal of phosphate releases energy
• aging in humans (progeria).
Answer: what can lamin mutations cause?
• Enzyme localization.
Answer: Cells localize enzymes to where the reaction is needed
• Substrate.
Answer: Reactant where enzyme binds
, • Negative ΔG.
Answer: Reaction is spontaneous and favorable (exergonic)
• pH effect on enzymes.
Answer: Amino acids gain or lose H+ ions; side chain charges change;
active site shape changes
• Endergonic reaction.
Answer: Free energy increases (positive ΔG); cannot occur on their own
• store and transmit hereditary information.
Answer: what functions do nucleic acids perform?
• Feedback inhibition.
Answer: End product shuts down earlier steps in pathway to prevent waste
• Shape control.
Answer: Protein shape changes alter active site structure
• microfilaments (MF), microtubules (MT) and intermediate filaments (IF).
Answer: structural elements of the cytoskeleton
• polyunsaturated fat.
Answer: fat that reduces cholesterol in blood and lower the risk of heart
problems
• ΔG (change in free energy).
Answer: Determines whether reaction is energetically favorable
• Energy coupling.
Answer: Using exergonic reactions to drive endergonic reactions
• Regulation by chemical modification.
Answer: Add/remove small chemical groups to alter enzyme shape and
activity
• unsaturated fats.
Answer: -C=C double bonds
• right.